[sean-jc:x86/sched_in_cleanup 2/3] arch/x86/kvm/svm/svm.c:1546:25: warning: unused variable 'sa'

From: kernel test robot <lkp@intel.com>
To: Sean Christopherson <seanjc@google.com>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [sean-jc:x86/sched_in_cleanup 2/3] arch/x86/kvm/svm/svm.c:1546:25: warning: unused variable 'sa'
Date: Sun, 28 Apr 2024 10:28:04 +0800	[thread overview]
Message-ID: <202404281007.s4Kg7sNr-lkp@intel.com> (raw)

tree:   https://github.com/sean-jc/linux x86/sched_in_cleanup
head:   f857e355f9536935b6c96bf389119576043aeb75
commit: 833d3234e0b64c433eb900b0eb62cee8131e5c43 [2/3] KVM: x86: Fold kvm_arch_sched_in() into kvm_arch_vcpu_load()
config: x86_64-randconfig-161-20240428 (https://download.01.org/0day-ci/archive/20240428/202404281007.s4Kg7sNr-lkp@intel.com/config)
compiler: clang version 18.1.4 (https://github.com/llvm/llvm-project e6c3289804a67ea0bb6a86fadbe454dd93b8d855)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240428/202404281007.s4Kg7sNr-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404281007.s4Kg7sNr-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/x86/kvm/svm/svm.c:1546:25: warning: unused variable 'sa' [-Wunused-variable]
    1546 |         struct vmcb_save_area *sa = page_address(sd->save_area);
         |                                ^~
   1 warning generated.

vim +/sa +1546 arch/x86/kvm/svm/svm.c

  1541	
  1542	static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu, bool sched_in)
  1543	{
  1544		struct vcpu_svm *svm = to_svm(vcpu);
  1545		struct svm_cpu_data *sd = per_cpu_ptr(&svm_data, cpu);
> 1546		struct vmcb_save_area *sa = page_address(sd->save_area);
  1547	
  1548		if (sched_in && !kvm_pause_in_guest(vcpu->kvm))
  1549			shrink_ple_window(vcpu);
  1550	
  1551		if (sd->current_vmcb != svm->vmcb) {
  1552			sd->current_vmcb = svm->vmcb;
  1553	
  1554			if (!cpu_feature_enabled(X86_FEATURE_IBPB_ON_VMEXIT))
  1555				indirect_branch_prediction_barrier();
  1556		}
  1557		if (kvm_vcpu_apicv_active(vcpu))
  1558			avic_vcpu_load(vcpu, cpu);
  1559	}
  1560	

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https://github.com/intel/lkp-tests/wiki